Electric water heater



Sept. 23, 1924.

E. GROULX ELECTRIC WATER HEATER Filed May 26. 1923 au 6&0? ATTORNA Patented Sept. 2,3, i924.,

UNITED STATES ERNEST GROULX, OF IWICNTREAL. QUEBEC CAN Ala.

HAN, OF MONTREAL, GANADA.

ELECTRIC VJ HEATER.

.Application filed May 2,

0 all whom may conce/m.'

Be it known that I, Ennnsr Gaormx, a subject ot the King oi Great Eritain, and resident of the city ot liiontreal, in the Province of Quebec and Dominion ot Canada, have invented certain new and useful Improvements in Electric I'Vater Heaters, of which the following is tull. clear, and exact description.

This invention relates to new and useful improvements electric water heaters, and the object of the invention is to provide a simple, inexpensiive and highly ecient water heater.

Another object is to provide a water heater which will be portable and easily handled, andL which will be easily connected up to both the power and water sources.

In my invention, I provide a cylinder with a top and bottom cover and, within this cylinder, is placed the heating element, which consists ot a plurality ot independentheating units placed one within the other and electrically connected to each other and to a plug, which may be connected to a socket placed in the main electrical supply. The heating units consist et a series ot' wire coils vertically disposed and passing through asbestos or like rings, which are positioned by means oil distance bolts. rlhe water is ted into the device through an inlet pipe at the bottom of the cylinder, and may be connected to the water source by means of a rubber tube or the like. This inlet tube is connected first to spirally wound pipe coils, which may be placed between the heating units. The pipe coils are then extended or connected to a spirally wound pipe coil or coils placed between the inner wall of the cylinder and the outer heating unit. The outer pipe or water coil is connected to a discharge pipe situated in the wall of the cylinder. The water coils may consist of a plurality of pipes of small diameter, all connected to the main inlet and outlet pipes This allows a small volume of water in each pipe to come in contact with the heat radiating from the heating elements. A handle may be provided to allow for easy handling of the device.

In the drawings- Fig. l is a sectional elevation of the water heater.

Fig. 2 is an elevation of the heating units.

laas. serial No. eaters.

lJig. 3 is a plan view ot the device with the top cover removed.

Referring more particularly to the drawings, ll designates a cylindrical shell, which is provided with detachable top and bottom covers l2 and 13, which may be held in posi tion by screws le or the like. Inlet and outlet pipes l5 and 16 are provided in the walls ot the cylinder tor the water supply.

Within the cylinder is placed a plurality ot heating units one within the other and spaced troni cach other, with the outer unit clear ot the inner wall ot the cylinder. In the drawings I have shown two heating units, which are shown in detail in Figure rlie outer ieating unit 17 consists of a plurality ot vertical wire coils 18, which pass through asbestos rings 19, said rings being spaced trom one another on the screw bolts 20. The outer diameter must be smaller than the inside diameter ot the cylinder. The inner heating unit comprises a plurality of vertical wire coils 2l, which pass through asbestos discs 22 spaced from one another on the screw bolts The bolts 2O and 23 are extended to provide a clear space between the bottom of the cylinder and the bottom asbestos rings and discs. The diameter ot the discs 22 is such that a space is lett between them and the inside diameter of the rings 19, which space is designated 24'. The water is fed through the inlet pipe into a plurality of pipes 25 within the cylinder. These pipes are spirally wound first be tween the heating units in the space 24 and then between the inner wall oi the cylinder and the outer heating unit. The spirally wound pipes may he so arranged as to forni double coils 26 and 27 and are connected together at their ends, the inner coil to the inlet pipe and the outer coil to the outlet pipe, as designated at 28 and 29 respectively. Current is supplied to the device through the double cord cable 30, one wire 3l of which is connected to the inner heating element and the. other wire 32 to the outer heating unit, both units being in series with one another. il plug 33 may be attached to the end of the doubled cord cable 80. An air valve or aperture'S-i may be provided in the outer cylinder to prevent the heated air from distorting or damaging the device. A handle 35 may also be provided tor handling the device or attaching the heater to any convenient attachnient in close proximity to the power and water supply. I

The operation of the device is as fol- Vhea-ting elem ent.

The inlet pipe may be connected to a water faucet or the like by means of a rubber tube or the like. The electrical supply may be taken from a socket or the like by means of the plug attached to the end of Ythe double cord cable, said ca-ble being'attached to the heating units which are in series. rhe water Hows through the inlet pipe into the double pipe coils, which are positioned between the outer and inner heating units, and from thence passes to the outer pipe coils, which are placed between the outer heating unit and the inner wall of the cylinder. The outer coil is connected to a discharge pipe. cylinder absorb the heat given out by the The water takes a long spiral course to the outlet, thus exposing the water long enough to bring the same to the boiling vpoint before delivering it through the discharge pipe. /Vhen the air within the cylinderV expands, it passes through the air valve, thus preventing any distortion in the cylinder' or explosion through said expansion. The removable top and bottom provide easy access for cleaning and repairing of the various elements of" construction. Y

Having' thus described my invention, what I claim is :-V

l. An electric water heater comprising a cylinder vwith removable top and bottom covers and having a-n inlet pipe and an outlet pipe, a plurality of heating units placed within and spaced 'from one another and The small pipes within theV from the inner wall of the cylinder, a plurality of pipes coiled between the heating units and between the outer hea-ting unit and the inner wall of the cylinder, said coils being connected together and so arranged as to provide a continuous passageway between lthe inlet and outlet pipes, and means to connect the heating units Vto a source of.

passageway between the inlet and the outlet pipes7 meansV to connect the heatingnnits to a source of electrical supply, and means 'to revent burstino` of the c linder throuh Y D b air expansion due to heating (from the heating` elements.

3. A device according to claiinQ, in which each heating unit comprises a plurality of asbestos rings, screw boltsadapted to space the rings from one another and from the top and bottom 'of the cvlinder, and a series ot' coils of wire passingl through said as-V bestos rings and adapted to form a continuous conductor for anV electrical supply.

In witness whereof I have hereuntov set my hand.

, ERNEST GROULX. 

